[Jacques Reed]

Hi Andy,

Just had a look at the hose. The end that attaches to the truck fitting is a just a female Schrader valve thread so on that basis it is a male Schrader valve fitting at the truck.

A quick Google search says it is an oddball 0.305-32 thread. There are a few suppliers of that size tap and die on EBay.

As a matter of interest the manufacturer stamped on the tyre end fitting reads "Thumlock" Gurnard Mfg. Co. Beverly Mass.

Hope this is what you need and is of some help.

Cheers,

Jacques